@article{10_4064_sm_33_1_109_118,
     author = {Richard Gundy},
     title = {On the class {LlogL,} martingales, and singular integrals},
     journal = {Studia Mathematica},
     pages = {109--118},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1969},
     doi = {10.4064/sm-33-1-109-118},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-33-1-109-118/}
}